The audio for the recorded show has been slowly improving over the past 3-4 weeks though I do still pick up what I believe to be a ground-fault hum. The cure for this low (60Hz) tone is to carefully remove, clean and reinsert all analog interconnects including (especially) microphone plugs. The judicious use of a little DetoxIT, ProGold or Tweak may also be helpful.
Now - onto FITN - a couple of links today:
Newly Discovered Gene Enables Fish to “Disappear” 
Young algae industry getting government push ... going_green/
Discus Fish Parent Their Young Like Mammalian Mothers
a review of lots of stuff that has been discussed on the show as well as some breeding details (Buckley).